-
Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... bit with memory contention and floating bus stuff in ZXDS and there ... seem to appear on the floating bus.
To be ... ?). However, as far as the floating bus is concerned, the very same ... .html"]tech doc[/URL] about floating bus.
Ramsoft's [URL=" ... -
Pentagon floating bus timingI wanted to take a little break from working on the ZXDS UI yesterday, so I added support for Pentagon timing instead, so I can finally enjoy the lik…
... and exact info about the floating bus behavior and timing. An explanation ... -
Floating bus on 128K models[b]Background:[/b] i need run code with interrupt enabled but i need use stack instruction to maximize performance in copy/shift/mirror routines. dur…
... /> questions are:
1) is floating bus present on all of 128 ... -
Emulating a +2A with floating bus modBefore I start hacking Fuse's source... Does any existing emulator have an option to behave as a +2A with the [URL="http://www.secarica.ro/html/plus…
Before I start hacking Fuse's source...
Does any existing emulator have an option to behave as a +2A with the [URL="http://www.secarica.ro/html/plus3_hardware.html#inFFport"]floating bus modification[/URL]?
-Stephen -
Spectrum +2A floating bus portHi As I discovered in the past, Spectrum +2A (and probably +3) do have floating bus port. But it is not shown on all unused ports, only on some po…
... (and probably +3) do have floating bus port. But it is not ... that +2A does not have floating bus port, but it's incorrect ... -
SPIN Public Beta 0.1b Available for downloadHi all, back again, and as just recently announced on CSS, SPIN has been updated. Here's the post to CSS (or the relevant parts): It's been a bu…
... /> Added ULA Snow effect, and Floating bus based on RamSoft's technical ... -
ANN: Spectaculator 2.5 available for downloadHi. I've just released a new version of Spectaculator, available from [url="http://www.spectaculator.com/"]http://www.spectaculator.com/[/url]. Hopef…
... />
Emulation
- Floating bus emulation as per Ramsoft technical ... -
Emulation accuracy and how it affects softwareHi folks. I was thinking of bodging together a rudimentary Spectrum emulator myself, not as a competitor to the other emulators, but as an integrate…
... /> Hardware quirks such as the 'floating bus' effect will also be absent ... -
ANNOUNCE: Fuse for Mac OS X 0.7.0Following the release of Fuse 0.7.0 is the unsurprising release of Fuse for Mac OS X 0.7.0 which should be available for download shortly at the Fuse…
... /> + Much improved contended memory and floating bus emulation.
+ Improved display timings ... -
(Belated) ANNOUNCE: Fuse 0.7.0 and libspectrum 0.2.2 releasedThe Fuse team is pleased to announce that release of Fuse 0.7.0, the associated utilities and version 0.2.2 of the Spectrum emulator support library,…
... /> + Much improved contended memory and floating bus emulation.
+ Improved display timings ... -
ANN: SpecEmu 2.3 - Minor UpdateHere's a minor update to the SpecEmu emulator - the emulator with an incredibly small filesize for a Win32 application, and backed up with an incredi…
... opcode contention timings.
- Improved floating bus emulation.
- A 1 cycle ... -
A few questions regarding EmuZwinA few questions regarding EmuzWin 1. I have been trying to write a program to generate multicolour effects on the Spectrum,ie more than 2 attributes…
... works ok.
4. Floating Bus implementation. I use this to ... -
A few questions regarding EmuZwinI had posted this in the development forum and then remembered there was an emulators forum, so apologies for the repetition. 1. I have been trying …
... works ok.
4. Floating Bus implementation. I use this to ... -
Problems with games on +2AHi! I have a +2A now and have problems running some games on it. I tought the resistor fix (to give it some kind of "floating bus" as the original 4…
... give it some kind of "floating bus" as the original 48k and ... -
Hardware GuideI was thinking this might make a good sticky... [b]Service Manuals[/b] [URL="ftp://ftp.worldofspectrum.org/pub/sinclair/technical-docs/ZXSpectrum48K…
... /floatingbus.html"]The Floating Bus Explained[/URL] -Info about the Floating Bus and the ... -
Fuse 0.8.0.1 releasedI have just uploaded version 0.8.0.1 of the [url=http://fuse-emulator.sourceforge.net/]Free Unix Spectrum Emulator[/url] to SourceForge and WoS, wher…
... />
* Fix IN timings and floating bus behaviour.
* Fix widget UI ... -
Fuse for Mac OS X 0.8.0.1A bug fix version of Fuse for Mac OS X has been released soon or already here at WoS and at the dedicated sourceforge project: [url]http://sourcefor…
... ]
[*] Fix IN timings and floating bus behaviour.
[*] Fix crash if ... -
Harlequin ZX Spectrum Clone now 100% compatible!Hi all! The Harlequin ZX Spectrum clone now shows full timing compatibility with the ZX Spectrum! 8-) Both the ULA IO and memory contentions are fa…
... /> along with contended and uncontended floating bus reads.
Full details ... -
RUSSIAN SOFTWARE and real ZXRussian ZX games is writed on russian ZX clones and support hardware feature TURBO OFF ( for ZX clone ZS SCORPION ). Russian ZX clone ZS SCORPION use…
... and CPU read data from floating bus ( value #FF ). Software TURBO switching ... will ZX crash (data from floating bus is writed to paging port ... to paging port data from floating bus (can't be use)
floating bus (can't be use)
IN 255 behaviour not emulated in Spectaculator and ZXSpinI'm not speaking about "normal" IN 255 behaviour. All of you know what I'm taking about: IN 255 can be used to "read" screen data as it's retrieved f…
... -A15 during an I/O bus cycle.
What I ... Z80 wants to initiate a bus cycle that might affect contended ... Z80 can only read FFh (floating bus).
Convinced myself about ... only contends the I/O bus cycle if A8-A15 falls ...Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…
... memory not emulated yet
[*]Floating bus not emulated yet
[*]Quick ...JSpeccy: New emulatorHi there, Jos? Luis S?nchez (zx81 at ono dot com) has developed a new ZX Spectrum emulator in Java, with a very accurate Z80 emulation. The message …
... emulation (Uridium, Overscan Demo)
- Floating bus emulation (Arkanoid, Sidewize)
- Speaker ...IM2 Loading on +3EHi there Speccy Guru's, As some of you know, I've spent a while building the ultimate image for +3e, it's currently at 6000+games and demos and i've…
... 's not due to the floating bus, maybe the real hardware changes ...Tricks with IN 31It's generally considered unwise to use a Kempston joystick's fire button to start a game, because the floating bus effect can make arbitrary data ap…
... start a game, because the floating bus effect can make arbitrary data ...Contention detectionJust a thought, based on discussion elsewhere... Is there any way of telling if reads/writes are being contended around the time that they happen? L…
... .
There's the floating bus method, for telling whether the ...Emulating the 128KeIt occurs to me that I wasn't frequenting WoSf when I created the 128Ke standard, which means some people haven't heard of it. Here it is: [url]http…
... plus software that requires the floating bus. 128 software that requires the ...Shadow ROM partial decoding not implemented in emulatorsOr at least, not implemented in Spectaculator, and it seems that not in Fuse too. [URL="http://www.speccy.org/foro/viewtopic.php?f=8&t=408&start=53"…
... from the main ROM, not floating bus (ULA/FFh), of a mirror ...ZX Spectrum 48K clone and test resultsHi! This is my first post, so, first of all, I'd like to say hello to the whole community! I am Alessandro Dorigatti from Italy and I'm developing …
A new ZX spectrum cloneOver the past 12 months i have been developing a new spectrum clone as a hobby project to waste my spare time on. It is still not fully complete yet …
... with 48K display timings
Floating bus and contention emulation model (not ... with digital TVs)
Expansion bus connector
I ... to load
Implement a floating point co-processor usable as ...Timing of Timex Computer 2068Is the timing of the Timex Computer 2068 fully documented yet? I have one here with the ZX Spectrum Emulator cartridge and have downloaded a few test…
... on the Timex not a floating bus. I'm wondering how to ... only part of the SCLD bus is coupled to the Z80 ... bus via resistors. I have seen ...
